I've seen a thread related to this tonight, and even bumped that thread tonight on this issue, but just in case I'm not completely understanding I'm posting this as a new thread in as concise a way as possible.
If users want to send via our smarter mail server using outlook, thunderbird, etc, and they want to be unencrypted - go ahead and use port 25 - see if I care. I know 25 has to remain unencrypted in order for the world of email to function. However if you are authenticating using 587, I want to force you to use and encrypted connection.
Am I right that this is not possible at this time? I'm doing some testing and it allows me to connect via 587 with an unecrypted connection, even though I have TLS turned on that port.